Factors of 3
There are 2 factors of 3 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 3
1, 3
Factor pairs of 3
- 1 × 3
Prime factorization of 3
3 = 3
Number facts
- 3 is a prime number.
- 3 has 2 factors.
- 3 is not a perfect square.
- The sum of all factors of 3 is 4.
Divisibility rules that apply to 3
- 3 is divisible by 3 because the sum of its digits (3) is divisible by 3.
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How the factors of 3 are calculated
To find the factors of 3, every whole number from 1 up to the square root of 3(about 1.73) is tested for even division. 3 is odd, and it turns out to be prime — no whole number other than 1 and 3 itself divides it evenly. Written as a product of primes, 3 = 3.
Frequently asked questions about 3
How many factors does 3 have?
3 has 2 factors: 1, 3.
Is 3 a prime number?
Yes. 3 is prime because its only factors are 1 and 3 itself.
What are the factor pairs of 3?
The factor pairs of 3 are 1 × 3.
What is the prime factorization of 3?
The prime factorization of 3 is 3.